Suwilai PremsriratPreedaporn Srisakorn2023-09-012023-09-01200820082023Thesis (Ph.D. (Linguistics))--Mahidol University, 2008https://repository.li.mahidol.ac.th/handle/20.500.14594/89080xvii, 246 leavesapplication/pdfengHistorical linguisticsSo language (Thavung) -- GrammarMahidol University